Normal Class Concrete is the variety of concrete mixes that are standardised. They come in two varieties based on their strength –
(a) The 20 MPa and 25 MPa compressive strengths, on the one hand, are usually used for house slabs, driveways, footings and footpaths.
(b) The 32 MPa, 40 MPa and 50 MPa compressive strengths, on the other hand, are used in commercial and industrial projects which require concrete that will experience greater loads and traffic.
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